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Terraria Wiki
Desktop versionConsole versionMobile versionNintendo Switch versiontModLoader version
Desktop/Console/Mobile/Switch/tModLoader-Only Content: This information applies only to the Desktop, Console, Mobile, Switch, and tModLoader versions of Terraria.
  • Geyser item sprite
  • Geyser placed
Stack digit 9.pngStack digit 9.pngStack digit 9.png
Placeable✔️ (2 wide × 1 high)
Use time15 (Very fast)
RarityRarity level: 0
Research5 required
Projectile created
  • Geyser

A Geyser trap in action.

Geysers are traps that spew a vertical stream of fire when triggered via wire or when stepped on by a player. They are found naturally-placed in random areas that are deep enough to generate lava, including the Underworld and deeper Cavern areas.

On the Desktop version Desktop version, Console version Console version, Mobile version Mobile version, and Nintendo Switch version Nintendo Switch version, they will activate when a player touches them, and will generate without Pressure Plates or wires. However, they can still be triggered by wires.

On the tModLoader version tModLoader version, they can only be triggered by wires, and will generate with Pressure Plates wired to them.

They consume no ammunition, and their output is limited only by a cooldown period of 3.33 (3 1/3) seconds. Geyser streams extend approximately 20 tiles up or down, depending on placement.

Geysers can be placed on the top or bottom of blocks, facing upward or downward respectively, but not sideways.


  • Geysers are highlighted by the Dangersense buff.
  • Unlike Flame Traps, Geysers do not inflict the On Fire! debuff.
  • If a Geyser is blocked by less than 29 other solid blocks, of at least 4 vertical blocks and 2 horizontal blocks, including liquids, it will pass through them signaled by puffs of smoke moving through the blocks, beginning the wall of fire at the first opening. The smoke will still inflict damage on players if touched.
  • Activated Geysers will not free any placed objects, including Torches.